Summary:

- Researchers have discovered that exposure to a common antidepressant drug called fluoxetine (Prozac) is causing wild salmon to exhibit more risky behaviors, such as being more active during the day and less responsive to predators.
- This drug pollution in waterways is likely coming from wastewater treatment plants that are unable to fully remove pharmaceutical compounds, which then end up in rivers and streams where salmon live.
- The changes in salmon behavior due to drug pollution could have serious consequences for the overall health and survival of wild salmon populations, which are already facing threats from habitat loss, overfishing, and climate change.